July weather forecastWatertown, MA
July
Weather in July
July, like June, in Watertown, Massachusetts, is another warm summer month, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 81.9°F (27.7°C).Temperature
July is the warmest month, with an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 64°F (17.8°C).Heat index
The heat index for July is computed to be a hot 87.8°F (31°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
In July, the average relative humidity is 74%.Rainfall
In Watertown, during July, the rain falls for 10.2 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 85.9 rainfall days, and 5.87" (149mm) of precipitation is accumulated.Snowfall
In Watertown, snow does not fall in June through October.Daylight
The average length of the day in July is 14h and 55min.On the first day of July, sunrise is at 5:12 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:05 pm EDT.
Sunshine
In Watertown, the average sunshine in July is 10.3h.UV index
The months with the highest UV index in Watertown, Massachusetts, are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In July, a regular UV index of 6 translates into these guidelines:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Watertown, MA
- Average high temperature in July: 81.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in July: 64°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in July
Watertown, MA
- Average pressure in July: 29.94"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Watertown, MA
- Average wind speed in July: 5.9mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in July
Watertown, MA
- Average humidity in July: 74%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall in July
Watertown, MA
- Average rainfall in July: 0.51"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in July
Watertown, MA
- Average rainfall days in July: 10.2 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in July
Watertown, MA
- Average snowfall in July: 0"
The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in July
Watertown, MA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Watertown, MA
- Average daylight in July: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in July: 10h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in July
Watertown, MA
- Average sunshine days in July: 17.8 days
The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).
Average UV index in July
Watertown, MA
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
Watertown, MA
- Average cloud cover in July: 35
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in July
Watertown, MA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
